Technical and How-To Articles Post your Tech Tips and How-to articles here. Photo illustrations welcome

no spark on a 1985 yamaha 80cc

Thread Tools
 
Search this Thread
 
Old Apr 2, 2011 | 04:27 PM
  #1  
autorevman4's Avatar
Thread Starter
|
Weekend Warrior
Joined: Apr 2011
Posts: 5
Likes: 0
Default no spark on a 1985 yamaha 80cc

I am asking this for my father inlaw.He bought this 4-wheeler for his son we knew it wasnt getting spark when we bought it and it has turned into a nightmare up to now we have put a new cdi,coil,spark plug,wiring harness,checked the key switch off/run switch.Icant remember what the magnetic thing was called its by the fly wheel I call it that is new.any way he and I have gone over everything a thousand times cant figure it out dumped alot of money in it hope someone can help.thanks
 
Reply
Old Apr 2, 2011 | 04:39 PM
  #2  
snow racer's Avatar
Pro Rider
Joined: Dec 2010
Posts: 362
Likes: 0
Default

Welcome

Is it a moto 4 i still have myne it was my 1st bike

So what is actuly wrong.
 
Reply
Old Apr 16, 2011 | 03:01 PM
  #3  
autorevman4's Avatar
Thread Starter
|
Weekend Warrior
Joined: Apr 2011
Posts: 5
Likes: 0
Default Thanx

But that doesnt help me get spark.Got anything else?
 
Reply
Old Apr 16, 2011 | 03:04 PM
  #4  
autorevman4's Avatar
Thread Starter
|
Weekend Warrior
Joined: Apr 2011
Posts: 5
Likes: 0
Default sorry

Didnt see your ? It will not spark we tested everthing we could with a multi meter everything checked out if it didnt we replaced it.Dont know were to go from here.
 
Reply
Old Apr 16, 2011 | 04:51 PM
  #5  
420Pimp's Avatar
Pro Rider
Joined: Jun 2005
Posts: 418
Likes: 0
From: Somewhere between Texas and NJ ;)
Default

Is the magneto producing current. What about the magneto?
 
Reply
Old Apr 16, 2011 | 05:25 PM
  #6  
snow racer's Avatar
Pro Rider
Joined: Dec 2010
Posts: 362
Likes: 0
Default

Fuse? its under the seat. i blow them alot
 
Reply
Old Apr 17, 2011 | 02:20 PM
  #7  
autorevman4's Avatar
Thread Starter
|
Weekend Warrior
Joined: Apr 2011
Posts: 5
Likes: 0
Default I think

We replaced the fuse,The magneto Which goes to the pick up coil I think that was not prducing aLOT of voltage but we replaced the pick up coil so could the magneto be bad?
 
Reply
Old Apr 17, 2011 | 02:21 PM
  #8  
autorevman4's Avatar
Thread Starter
|
Weekend Warrior
Joined: Apr 2011
Posts: 5
Likes: 0
Default

The magneto itself is original.
 
Reply
Old Apr 17, 2011 | 02:46 PM
  #9  
420Pimp's Avatar
Pro Rider
Joined: Jun 2005
Posts: 418
Likes: 0
From: Somewhere between Texas and NJ ;)
Default

That magnetos/stator been spinning in that bike for 25 years... Most defiantly that could be it .

Im not sure how to test them or how much current the stator on that bike puts out but its something you might want to look into , if everything electricals new thats the only thing it could be, or did you replace the stator/magneto already?

I dont know much about the specific model but all engine setups tend to work alike.

I hope thats what it is. Good luck...
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Dustinyoungs
General Chat
1
Jul 24, 2015 07:18 AM
Dirtbikemike1
Yamaha
0
Jul 21, 2015 04:13 AM
CRamshaw777
Classifieds, Garage Sale & Swap Shop
0
Jul 18, 2015 05:46 PM
HondaR24
ATV Videos
6
Jul 16, 2015 10:45 AM
ATVC Correspondent
Classifieds, Garage Sale & Swap Shop
0
Jul 7, 2015 11:00 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 04:40 PM.